<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>

<body>
    <p>这是a</p>
    <p>这是a</p>
    <p>这是a</p>

    <a href="./index.html" target="top">跳转到index</a>

</body>

</html>